Head on to superviseddirective section as shown below and change the status from "no"to "systemd" which is used in Ubuntu 18.04. This will allow you to manage Redis as a service i.e. start, restart and check the status

Conclusion

The Redis server is only accessible from localhost. It may be necessary to configure it to allow connections from other sources ( IP addresses ) and other required configurations. For more details check our tutorial -How To Configure Redis Server on Ubuntu 18.04